Automatic tool-operating device.



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i tional view of an automatic tool operating `device embodying this invention, the same being shown partially in diagrammatic or conventional form. Fig. :2. is' a is a similar section on the line 33, Fig. 11

for receiving the aioremid reciprocating armature or core 5. The flanges 6, Lof the spoolsmay'be inc losed Chicago, county of Cook, and State oflllinois, have into provide improved and efficient-means for thus oper- -call'y designed asfan improved substitute for the well'- accomplishment of certain other objects which will hereinafter appear, the invention consists in the fea- 4agrammatically in the drawing at 1, 2, respe .-t.ively,-

respectively, which may be composed of snit. iron or any NITED STATES .PATENT OFFICE. j j

ARTHUR CLEMONS AND DAVID w1 PELKEY, OF CHICAGO, ILLINOIS, .issIGNOns *OF-ONE- Speccation of Lettera Patent.

No. 868,967. Patented oct. 2e, 1907. l Apnann and .ocular s, 19de. sont No. 338,150. T9 all -whom it may I reversing 1nec1 ia`,n'iism,-4 which is actuated automatically Be'it known that we, AmnUli-CLaMoNs and DAVID 'toy alternately energize the solenoids by a suitable W. PELKEY, citizens of the United States residing at mature 5 in the form of a disk or shoulder 11, which is composed of fiberor any other suitable insulation.

The apparatus issupplied with current from any suitable source, such as a battery or generator vl2, having itsv leads 13 running to'eontacts 14, 14,to which the leads may be detachably connected by any well known. means such as plugs 15, 16. The contacts 14, 14 are mounted within the cylinder 8 upon a suitable insulation 17,.and one of ythemis connected to one side of a thumb switch 18 'arranged in a position convenient to the handle 19, so as to be manipulated at will bythe thumbof the hand which grasps the handle, for closing the. circuit between the'leontact 14 and a wire or c ondoctor 20, whichjnnects theoth'erfside of switch 18 'with two ntactspringsor plates *21, 22, mounted upon the inner lianges 7 of the spools upon suitable insulation 23. Contiguous to the contacts 2l, 22, respec- .ventedcertain new and useful Improvementsi'n .Auto- A maticTool-Operating Devices, of which the following is a full, clear, and exact specification.

This invention relates to devices for automatically operating toolls` such as riveting hammers, chisels, reciprocatingl drills, etc., and it has'for its primary object' ating such tools electrically, lthe invention being espeknown pneumatic hammer. i a ,4 l

With a v iew'tothe attainment'of these ends and the tures of novelty which' will now bedescribed. with reerence tothe accompanying drawings, and more particularly pointed out in the claims. i

In'the said drawings- Figure 1- is a longitudinal A i which vtogether 4with the lcontacts 2,1, 22, constitute clips `for'respectively'receiving plugs or reciprocating switch members 26, 27. .Theeontact 25 is connected cross section thereof on the line 2 2, Fig. 1; and Fig. 3 by conductor 28 to one terrruinal ofthe helix 2, while Y the other terminal ofthis helix is' connected by con- In carryingout the inventon, two s olenoids or other electro responsive devices are employed, and these are arranged preferably in. axial alinementwith a movable armature core whichl is common to both and is alternately attracted thereby, and carries or otherwise operates Vautomatic reversing or switching "devices, which' serve to altem'ately energize and denergize the solenoids or electro responsive devices. In the e'xemplilication of the, invention shown the solenoids eaehcomprise a helix, and-these are'shown conventionally or di- 7 on a piece of insulation 31 contiguous to a companion lcontaict spring 32, which' is connected by a' conductor 33 to a contact spring 34, directly'oppost-xl to the contact 32 and arranged on the opposite tlange 7 upon a :suitable'block ol' insulation 35. This contact H is connccted'by conductor 36 tothe contact socket 14. The

'nected by conductor 38 to'one terminal of the helix 1, whoseother temiinal is connected by conductor 39 to Contact spring 24.

these being wound, if desired, upon suitable spools 3, 4,

formed on theendsofa sleeve or tube 4l'for convenience otherv suitable material, `with theiraxes iu alinement and may beloosely mountcd'upon a guide-rod l0, havplugs areprovided with flanges or-shouldcrs 42, 43, rewithin a suitable casing orcylinder 8, which incluses spec-tively rangul to be alternately engaged by'the the coils of the solenoids and the working parts'oi the mechanism, and inay be secured to these llanges in au y armature recilvimcntes the circuit. will be alternately or core 5 is so proportioned 'with respect to the-lmres oi' the spools nsto have aueasy wor-kingffit therein, this l l, 2, lhe parts being so pmportioned than. the'circut. will i be broken or opt-ned in one helix before it is closed also being composed osoit irnstlstial, and in order to I thniugh the other, and tlnl menu-muni of the nrm'nture, I avoid the poesibilityoi the same. b'coltting penna-" i of course, being sulleient to tinninue its motion during uently mngnetlzed'it is preferably'incascd in asheuth i the period when both cin-nits areopened.

. y t l I t ol' bmslt). The spool' langes 7 at the inner cndsof the solenoids tively bythe contnt'ts 30, 32 and 34, 37, are plugs or ure situittd u ,sullitivnt distance apart to lea've room be'- awitches similar to the plugs or switch@` 26, 27. The l. tween them for'the accommodationof the -switching or are indicated at 44, 45, respectively, und are mounted ilangeor shouhlerll on the armature 5, so that-asthe l 100 openedantl closed through the soleiwidsor theirheliees 'means carried preferably directly upon'the core or ar- I tively, are companion contacts 24,25, respectively,

ductor 29 to a contact 30, also mounted upon the llange contact spring 34 has a companion 37,.'hich is con- The reciprocating switch. plugs-26, 27 lare preferably ing itsfends supported by the opposed Ilanges 7. 'liie 'n Arranged in :t line with t wo clips constituted respoc- ................a..ww.

upon allyfs'uitable'guid-rod 46, Ahaving its ends supported by theilange 7.- These plugs or switches 44,- 45

are al'sl iorlnedoll the endsof :l sleeve or tube 47-sliding upoll the rod 46, and they like tlephlgs 26, 27 are pro- 5 vided with shoulders 48, 49. respectively arranged tolle alternately engaged by the ililngeA or shoulder ll on the armature 5. Constxluently the twoseifs oi switches operatc in unison. That is tosny, the plugs 27, 1 12 simul clips, and the same is true witll respect to the plugs 26,' 44. It will also be seen by tracing the circuits and that by this double arrangement of switches for each of the .solenoids each solenoid is entirely segregated irnm its circuit at both oi its terminals simultaneously. The adi/innige of this is um it avoids absolutely um polsibility of the existence oi any residual magnetism at a time .when theisolenoid sllouldAlldeari :.rabsolutely deenergizedfand 'it also ,avoids/ injurious sparking at contacts which .would/result. and would materially .deteminal of tlle's-olenorif': only. y

Assuming tho/thumb switch 18, which may be automatically byaspring 185, is closed and the plugs l5, lil are 1n place, the circuit may be traced as follows: From'fhe'lead 13- via t he switch l 8-into conductor 20 te theicontaet 22, thence through plug-27 vand contact 25 ',/and along cgiiidiiwi .zafixfitlm lieu; 2,' and from :lie

/ helix 2 along cond lictor 29 to contact 30, thence throughl vplug 45 and contnct 32 alongconductors 33 and-36 to the ply, thereby energizing `the -helilt or -'s ol enoid 2, and; pullirl'gth 5 tothe endl o f its stroke opposite that'show'n in l ofthe drawing.v ii:- about to complete this stroke the shoulder or 11 comes intixv 3 engagement with thedistant flanges 42, '48 of the contact plugs 26, 44, andv forces these plugs iutolengagementwith their respective switch 'clips mounted upon the insulations 23,*35, the'circuit through the solenoid 2 having previously been broken at both terminals oi the solen 40 oid at the time 'thev plugs 27,Y 4 5L passed .out of contact with their respective` clips. The plugs .26, 44 being in engagement with their respective c lips,.the eun'entwill flow through or energize the isolcnoidl'through the cir- I cuit, which may be traced from the ,conductor 20 tothe I Contact 21,.,thence through plug`26 'and Contact 24 over conductor 39 'to one terminal of helix 1 rom the -otner terminal of helix. l'over conductor 38 to contact 34 to the conductor 36 andhome :igain via the socket contini. 14 1n order to avoid objectionable jars or damagein the parts when the armature readlesthe lirnitof its stroke, suitable resisting means may beemployed. For this purpose at one en d of the spool isfonned a dash pot or air cushion 50. This is made byclosing the end of the spool hyvman's of a capl, so that the air Aforced 'to the head 0f thenrmature will be prevented from es- .caping ico rapidly'. In orderfhowever, that it may not -retard the speed ofthe armature. prematurely the flash-v pot is providedwith :1. vent 52 at a suitable distance -from itsclosed end to allowftlle air to escape freely or 60 withsufii'dient freedom until that point is pa.s -'ed,'tllere f by leaving an air cushion atjthc extremity -i ilse stroke which not only prevents shock, but serves lo start the armature on its retuvm movement. The opposite throw of the armature and tile shock thereof is, `oi re- "os ivedvby me work while :he machine it in when, but

taneously eng-agel and disengage their respective switch riorate the' contacts if the circuit were broken at one ter-l contact soc'ltet14, and thence back tothesource of supf to prevent undue shock-Juud' possibly to the parts in the event the machine shouldbe operated when -be employed forfreceiving the -shocka't this endof the stroli'e also. Such cushionis constituted by cup or cylin'd'er 53 formed on the end of the spool 3 and arranged to-receive an enlargement or shoulder 5 4. constituting the piston on the-armature. It is 'of couise' understood that by the time the piston54`enters cup or cylinder 53 an effective distance the armature will have performedits allotted function of imparting to the tool the desired impetus or blow. i A machine thus'construct'ed may be utilized as an operating machine for a. hammi'il Chisel, il reciprocating drill, or other form of tool requiring a rapid reciprocating movement.l i I tion the exarnpleoi 'which is connected the end of thearmature 5 in any suitable way, as by screw 56, so as to be detachable. In the use of the tool as a hammer operating means it is, oi course, h eld close to or against the rivet to upset or other work to be done, and with this class of won it is held in axial @grieten ivitli the' work.l Further 6 to apoint-almost at the limit of the stroke` of the arma.

end of the rivet allowed to. project thTernii.Y I

chine is, described' in connection with such as a movement. 4 A .A 'Y Forconvenience of ,constructing 31nd' assembling the an exemplifcation thereof, but Y HWhat; we claixnas new and'desire to byLetters Patent,is: V 'W the circuit tiboth terminlils ot each eiectroreslumsive dcvice ns tbe coi-e reciprocntelgand meins may be connected to said core.A

2. In a machine-tor tile purpose dehcribe'd, tbeicombirelated -to said coe for alternately milking und breaking tile circuit nt both lterminano! en cb elm-iro renywnnive device ns the core reeiproeates.

'nation of il [novellie :i rmujt`l lre or core, vtwoelectrf'i responsive devices having 'their magnetic iiclds arranged lo act upon sn'id armature orcore alternately, nml nielrns whereby tile circuit at both terminln of euch et said ciectro responsive devices is nutomntically interrupted simultaneously, mid man ns whereby a tool is given operative re- Alation io snld core: l5

nltely interrupting thecir'cliit7 nt botil terminals of eachture or hammer in that dil'ectior'i,y as shown at 57, that -th'is'projaztion 57 will be premd againstthe worleorthe' hammenit is` equally. pplicab'lefor operatingany other tool or inst. l'llnientA requiring a machine, tile ilan'gesL may connected togther'by nation of a neciproeatory vnrx'nature or coro.,-iwifeleetro4 responsive devices in whose magnetic lleida ille ind of. said core are respectively situated, and menus operatively In thisexeinpliiication of` theinventool illustrated is la hammerl 55,A

. purpose :he eiidof ili spool 3 projects beyond the flange It will,.'ofcourse,- be understood -that whilethe il In order that slrilled in the art might and I use the invention we have thus' speciiililly 1. In a mchinetor the purpose'f'.described,fthe` com liinstioihot a'ileciproc'aitory-lirnlnture-or corefltwo electro `responsive devices in whoeemurnetic 'iields ltlle ends ot whereby n Atool i :L In s. machine for tbe purpose described, tbe colnbii o! said solenoids operatively connected with said armaprojecting into said solenoids, contacts for both the ter-- minais of said solenoids respectively, a reciprocating means for alternately engaging said contaets and thereby alternately energizing said solenoids, and means on said armature for engaging the/movement of said reciprocating means as the armature moves, and means whereby a tool may be operatively connected with said armature. l

6. In a machine for the purpose described, the combination of two allned solenoids, an armature having its ends projecting thereinto, two sets of terminal contacts for each of the solenoids, means for closing the circuit across both sets of said terminal contacts oi.' one solenoid simultuneously and opening tbe circuit across the two sets o! contacts of the other solenoid, and means whereby a tool may be connected with said armature.

7. In a machine for the purpose described, the combination ot two axially alined solenoids, a casing in which said solenoids are situated at a distance apart, forming a chamber between them within said casing` an armature having its ends arranged in said solenoids and extending through said chamber, contacts for both terminals of each o! said solenoids situated within said chamber, a reciprocnting means located within said chamber for alternately engaging said terminal contacts and thereby alternately energizing said solenoids, :1nd means on the armature within said chamber for engaging and moving said reciprocating menus 8. In a machine for the purpose described, the combination of a reciprocating armature, two electro responsive devices in the magnetic fields ot which the ends ot said armature are situated, means for alternately energizing said electro responsive devices embodying a pair ol contncts for each terminal of euch of said electro responsive devices, reciprocating plugs or switches for alternately engaging two pairs ot said contacts simultaneously, spacedA tool may be connected with said armature, and cushioning means vfor receiving the impact of thevarmature at the extremityof its stroke.

9. In a machine for the purpose described, the combination of two axially alined solenoids having hollow cores, a reciprocating armature having its ends situated in said hollow cores, one end of one of said cores being closed :md having a vent near the extremity thereof, and the end of the armature contiguous thereto forming a piston, the opposite end of said armature having menus for the atA tachment of a tool to be operated, and means for alternately energizing said solenoids.

l0. In a machine for the purpose described, the combination ot two electro responsive devices each embodying a helix having two terminals, a reciprocating armature having its ends arranged in the magnetic fields of said helices. a pair of contacts for each terminal ,of each of said helices. reciprocating plugs or switches for alternately engaging-two pairs of said contacts simultaneously, guidi-s upon which said switches slide, spaced shoulders carried by both of said switches, and an operating shoulder carried oy the armature and playing between the spaced shoulders of both switches for alternately moving the switches into and out o! engagement with said contucts.

In testimony whereof we have signed our names to this speciiication, in the presence of two subscribing witnesses, on this 4th day of October A. D.y 1906.

ARTHUR CLEMONS.

DAVID W.PELKEY.

l Witnesses:

Francis A. HOPKINS, Criss. H. Sami. 

